<template>
  <div>
    <!-- Breadcrumb 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--Card 卡片 -->
    <el-card>
      <!-- 搜索 -->
      <el-row :gutter="20">
        <el-col :span="12">
          <el-input placeholder="请输入内容" v-model="queryInfo.query">
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUsersList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="runDialog">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 数据表格 -->
      <el-table :data="userList" border stripe>
        <!-- 为表格添加一个编号（索引） -->
        <el-table-column type="index"> </el-table-column>
        <el-table-column prop="username" label="姓名"> </el-table-column>
        <el-table-column prop="email" label="电子邮箱"> </el-table-column>
        <el-table-column prop="mobile" label="电话"> </el-table-column>
        <el-table-column prop="role_name" label="角色"> </el-table-column>
        <el-table-column label="状态">
          <!-- 我们定义一个插槽 -->
          <!-- scope表示当前数据行 作用域 -->
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-tooltip
              effect="dark"
              content="删除信息"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="danger"
                icon="el-icon-delete"
                size="mini"
                @click="removeUserById(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- Pagination分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- Dialog对话框 -->
    <!-- 添加用户表单 -->
    <!-- visible.sync表示设置是否显示对话框  -->
    <!-- :before-close="handleClose"  表示在对话框关闭前要触发的事件 -->

    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%">
      <!-- 创建一个表单 -->
      <!-- 用户名 密码 邮箱 电话 -->
      <!-- 写完表单后要添加数据绑定以及检验的规则 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef">
        <el-form-item prop="username" label="账号">
          <el-input
            v-model="addForm.username"
            prefix-icon="iconfont icon-user"
            placeholder="请填写账号信息"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password" label="密码">
          <el-input
            type="password"
            v-model="addForm.password"
            prefix-icon="iconfont icon-user"
            placeholder="请输入密码"
          ></el-input>
        </el-form-item>
        <el-form-item prop="email" label="邮箱">
          <el-input
            v-model="addForm.email"
            prefix-icon="iconfont icon-user"
            placeholder="请输入邮箱"
          ></el-input>
        </el-form-item>
        <el-form-item prop="mobile" label="电话">
          <el-input
            v-model="addForm.mobile"
            prefix-icon="iconfont icon-user"
            placeholder="请输入电话"
          ></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="resetAdd" type="primary">重置</el-button>
        <el-button @click="cancelAdd">取 消</el-button>
        <el-button type="primary" @click="sureAdd">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户：{{ userInfo.username }}</p>
        <p>当前的角色：{{ userInfo.role_name }}</p>
        <p>
          分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;

      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb();
      }

      cb(new Error("请输入合法的邮箱"));
    };

    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;

      if (regMobile.test(value)) {
        return cb();
      }

      cb(new Error("请输入合法的手机号"));
    };
    return {
      //查询用户信息的参数
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 2
      },
      //保存用户的数据
      userList: [],
      total: 0,
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: ""
      },
      //Dialog默认为false
      addDialogVisible: false,
      //添加用户信息验证规则
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 11,
            message: "登录名称长度在 3 到 11 个字符",
            trigger: "blur"
          }
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "密码的长度在 6 到 15 个字符",
            trigger: "blur"
          }
        ],
        email: [{ required: true, message: "请输入邮箱", trigger: "blur" }],
        mobile: [
          { required: true, message: "请输入电话号码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "电话的长度在 6 到 15 个字符",
            trigger: "blur"
          }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象

      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: "请输入用户邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" }
        ],
        mobile: [
          { required: true, message: "请输入用户手机", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: ''
    };
  },
  created() {
    this.getUsersList();
  },
  methods: {
    //获取用户信息的列表
    async getUsersList() {
      //向后台发送请求获取数据
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo
      });
      //如果状态异常
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户信息失败");
      }
      //如果状态正常，获取用户数据
      this.userList = res.data.users;
      this.total = res.data.total;
      console.log(res);
    },
    handleSizeChange(size) {
      // console.log(size)
      this.queryInfo.pagesize = size;
      //重新查询用户信息
      this.getUsersList();
    },
    handleCurrentChange(page) {
      // console.log(page)
      this.queryInfo.pagenum = page;
      //重新查询用户信息
      this.getUsersList();
    },
    //更新switch状态
    async userStateChanged(info) {
      //请求路径：users/:uId/state/:type
      const { data: res } = await this.$http.put(
        `users/${info.id}/state/${info.mg_state}`
      );
      if (res.meta.status !== 200) {
        ifo.mg_state = !info.mg_state;
        return this.$message.error("更新失败");
      }
      this.$message.success("更新成功！！");
    },
    //查询用户信息
    queryUser() {},
    runDialog() {
      this.addDialogVisible = true;
    },
    //重置添加信息
    resetAdd() {
      this.$refs.addFormRef.resetFields();
    },
    //取消添加信息
    cancelAdd() {
      this.$refs.addFormRef.resetFields();
      this.addDialogVisible = false;
    },
    //确定添加信息
    sureAdd() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return;
        }
        //如果验证成功 向服务器发送异步请求
        const { data: res } = await this.$http.post("users", this.addForm);

        //判断是否添加成功
        if (res.meta.status !== 201) {
          this.$message.error("添加失败" + res.meta.msg);
        }
        this.$message.success("添加成功");
        //重新查询用户信息
        this.getUsersList();
        this.addDialogVisible = false;
      });
    },

    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id)
      //根据id来查询用户的信息
      const { data: res } = await this.$http.get("users/" + id);

      if (res.meta.status !== 200) {
        return this.$message.error("查询用户信息失败！");
      }

      //将获取到的数据保存到editForm中
      this.editForm = res.data;
      //显示窗口
      this.editDialogVisible = true;
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return;
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          }
        );

        if (res.meta.status !== 200) {
          return this.$message.error("更新用户信息失败！");
        }

        // 关闭对话框
        this.editDialogVisible = false;
        // 刷新数据列表
        this.getUserList();
        // 提示修改成功
        this.$message.success("更新用户信息成功！");
      });
    },
    // 根据Id删除对应的用户信息
    async removeUserById(id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);

      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      }

      const { data: res } = await this.$http.delete("users/" + id);

      if (res.meta.status !== 200) {
        return this.$message.error("删除用户失败！");
      }

      this.$message.success("删除用户成功！");
      this.getUserList();
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo;

      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败！");
      }

      this.rolesList = res.data;

      this.setRoleDialogVisible = true;
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo;

      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败！");
      }

      this.rolesList = res.data;

      this.setRoleDialogVisible = true;
    },

    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error("请选择要分配的角色！");
      }
      //put更新   post添加    delete删除   get查询
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      );

      if (res.meta.status !== 200) {
        return this.$message.error("更新角色失败！");
      }

      this.$message.success("更新角色成功！");
      this.getUsersList();
      this.setRoleDialogVisible = false;
    }
  }
};
</script>

<style lang="less" scoped></style>
